JPS6234063Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water control device that performs functions such as preventing backflow, regulating flow rate, and stopping water supply in a faucet such as a hot water mixing faucet.

For example, in a hot water mixing faucet, as shown in Figure 1, a crank-shaped water supply pipe b is connected to the faucet body a.
A water control device c has conventionally been installed in the middle of the water supply system to prevent backflow, adjust the flow rate, and stop the water supply. The structure of this water control device c is also disclosed in Japanese Utility Model Publication No. 55-27718, and a cylindrical body d is screwed onto the outer vertical wall forming a right-angled bent portion, and the cylindrical body d is
An adjustment shaft e is screwed into the inside, a shaft portion h of a top-shaped valve body g is loosely fitted into a vertical hole f of the adjustment shaft e, and the valve body g is attached to a valve seat formed on the inner wall of the water supply pipe b. It is made to face J. However, the water control device configured like this,
Although the stroke of the valve body g can be changed by adjusting the screwing amount of the adjustment shaft e, there is a drawback that the adjustable range of the stroke is narrow. In other words, with this configuration, if you try to lengthen the stroke, you have to make the cylinder d and the adjustment shaft e protrude a lot forward, but if they protrude a lot, the rotation of the spanner used to tighten the connecting nut k of the stopper body a will be affected. It got in the way. Therefore, the range in which the stroke can be adjusted has to be narrow, and this narrow range has the disadvantage that the range in which the flow rate can be adjusted is narrow. Also,
In general, if foreign objects such as rust or metal pieces get stuck in the gap between the valve body g and the valve seat j, and become caught in the water when the water is stopped, the valve seat j may be scratched. If seat j was scratched or worn, the entire water supply pipe b had to be replaced. In other words, if the valve seat j is even slightly scratched and its adhesion is impaired, backflow prevention must originally work from a sanitary standpoint even when the water pressure difference between the primary and secondary sides is small. However, since it no longer works, the entire water supply pipe b has to be replaced, which has the disadvantage of increasing the replacement cost.

This invention aims to eliminate the above drawbacks,
forming an outflow pipe that bends in a direction substantially perpendicular to the inflow pipe;
A cylindrical body concentric with the outflow pipe is screwed into the intersection, a horizontal hole is provided around the cylindrical body to communicate the inflow pipe side and the cylindrical body, and a lateral hole is provided in the base end of the cylindrical body. The adjustment shafts are concentrically screwed together, a tool engagement groove is formed on the outer end surface of the adjustment shaft exposed to the outside, and an extension of the adjustment shaft is projected into the outflow pipe, and a valve body is attached to the extension. A stop member is fixed to the tip of the cylindrical body in a slidable manner, and one end of a coil spring is locked to the stop member, and the coil spring urges the valve body toward the inflow side. This is a water control device for a water faucet that is opposed to the valve seat of a water faucet.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings, regarding a wall-mounted hot water mixer faucet shown in FIGS. 2 and 3. In Fig. 2, 1 is a hot water tap that can be opened and closed using a hot water supply handle 2, 3 is a hydrant that can be opened and closed using a water supply handle 4, 5 is a hot water pipe connected to the hot water tap 1, and 6 is a hydrant. A water supply pipe connected to section 3, and 7 indicate a hot water mixing discharge pipe. A cross section of the water supply pipe 6 is shown in FIG. 3, and the water supply pipe has an inflow pipe 9 that projects perpendicularly from the wall surface 8 and an outflow pipe 10 that is perpendicular to the wall surface 8. A threaded opening 11 is formed on the wall surface facing the outflow pipe 10, and a cylindrical body 12 concentric with the outflow pipe 10 is screwed into the threaded opening 11. One end of the cylindrical body 12 is connected to the inner circumference of the outflow pipe 10
The ring 13 is used to fit watertightly. The cylindrical body 1
2 is also provided with an O-ring 14 for water sealing. A horizontal hole 15 is provided around the cylindrical body 12 to allow communication between the inflow pipe 9 side and the inside of the cylindrical body 12. Further, an adjustment shaft 16 is concentrically screwed into the base end of the cylindrical body 12, and a linear tool engagement groove 18 is formed in the outer end surface 17 of the adjustment shaft 16 exposed to the outside. The extension part 19 of the adjustment shaft 16 is projected into the outflow pipe 10 through the inside of the cylindrical body 12, and the disc-shaped valve body 20 is slidably passed through the extension part 19, and the stop member 21 is screwed onto the tip thereof. Fixed by. Then, by locking one end of the coil spring 22 to the stop member 21 and urging the valve body 20 toward the inflow side by the coil spring 22, the valve body 20 is opposed to the valve seat portion 23 at the tip of the cylindrical body. It becomes. Note 24
A window hole 25 through which the outer end surface 17 of the adjustment shaft 16 is exposed is formed by a cover cap fitted onto the outer periphery of the outwardly projecting end of the cylindrical body 12.

In the water control device configured in this way, the inflow pipe 9
Due to the water pressure flowing in from the side, the valve body 20 is moved away from the valve seat portion 23 against the elasticity of the coil spring 22 and water is passed through the valve body 20 . In addition, the maximum water flow rate at that time is the adjustment shaft 16.
The movable range of the valve body 20 is adjusted by moving the stop member 21 forward and backward by screwing the valve body 21, so that it can be adjusted as desired. At this time, when water pressure is applied from the outflow pipe 10 side, the valve body 20 moves to the valve seat part 2.
3 to prevent backflow. If the stop member 21 is brought closest to the valve seat 23 so that the movable range of the valve body 20 is zero, the water stop function can also be achieved.

Although the above embodiment shows an example in which the inflow pipe and the outflow pipe are bent in orthogonal directions, the bending angle does not necessarily have to be exactly at right angles, and it is of course applicable to a certain range of cases. be.

As explained above, in a water supply pipe or a hot water supply pipe where an inflow pipe and an outflow pipe intersect orthogonally, a cylindrical body concentric with the outflow pipe is screwed into the intersection, and the tip of the cylindrical body is The flow rate is adjusted by providing a valve body at an extension into the outflow pipe of a regulating shaft that forms a valve seat and is screwed concentrically into the proximal end of the cylindrical body, and by moving the regulating shaft. We are making it possible to do so. For this reason, when a water supply faucet is installed through a crank-shaped water supply pipe protruding from a wall as shown in the example, the flow rate can be adjusted by moving the adjustment shaft back and forth in a direction parallel to the wall. Even if the stroke is large, the adjustment shaft does not protrude forward to a large extent, which facilitates the installation work without interfering with the tightening of the connecting nut of the plug body. In addition, if the valve seat becomes damaged or worn and needs to be replaced, the cylindrical body can be replaced instead of replacing the entire water supply pipe as in the conventional method, making repairs easy and inexpensive. There are other beneficial effects.

[Brief explanation of the drawing]

Fig. 1 is a front view of a conventional hot water mixer faucet, Fig. 2 is a front view of a hot water mixer faucet equipped with a water control device according to the present invention, and Fig. 3 is a line A-A in Fig. 2. It is an enlarged cross-sectional view. 9... Inflow pipe, 10... Outflow pipe, 12... Cylindrical body, 15... Horizontal hole, 16... Adjustment shaft, 17... Outer end surface, 18... Tool engagement groove, 19... Extension part, 2
0...Valve body, 21... Stop member, 22... Coil spring, 23... Valve seat portion.

Claims (1)

[Scope of utility model registration request] An outflow pipe is formed that bends in a direction substantially perpendicular to the inflow pipe, and a cylindrical body concentric with the outflow pipe is screwed into the intersection of the outflow pipe, and a cylindrical body concentric with the outflow pipe is screwed into the intersection of the outflow pipe. A horizontal hole for communication is formed, an adjustment shaft is concentrically screwed into the base end of the cylindrical body, a tool engagement groove is formed on the outer end surface of the adjustment shaft exposed to the outside, and a tool engagement groove is formed in the outer end surface of the adjustment shaft exposed to the outside. An extension part of the valve body is projected into the outflow pipe, and a valve body is slidably passed through the extension part, and a stop member is fixed to the tip of the extension part, and one end of a coil spring is locked to the stop member, so that the valve body is closed by the coil spring. A water control device for a faucet, characterized in that the valve body is made to face a valve seat at the tip of the cylindrical body by urging the body toward the inflow side.